Traction-engine



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TRACTION ENGINE.

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E. PENNEY.

TRAGTION ENGINE.'

No. 884,978. Patented Jan. 28, 1888..

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EDGAR PENN EY, OF IVA YN ESBOROUGI-I, PENNSYLVANIA.

Tenemos-enema.

TPECIFICATION `forming part of Letters Patent No. 334,978, dated January 26, 1886.

Application `filed November 27, 1885A To all whom, it may concern,.-

Be it known that I, EDGAR PENNEY, of IVaynesborough, in the county of Franklin and State of Pennsylvania, have invented certain new and useful Improvements in Traction- Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention7 such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to an improvement in traction-engines; and it consists in, first, a gear-frame which consists of a large rigid casting which is bolted or riveted to the extended portions of the outside fire-box sheet of the boiler, at and near the rear end of the firebox, the casting being made to connect the sheet both above and behind second, the combination of the boiler, the engine, and a pivoted expansion-joint, by means of which the front end of the engine is connected to the boiler, as will be more fully described hereinafter.

The objects of myinvention are to facilitate and cheapen the cost of manufacture,and make it possible to duplicate with certainty any of the main parts of the driving and propelling mechanism; to enable the engine and gearing to be mounted and set up independently of the boiler, and then placed in position and secured; to strengthen the structure of a traction-boiler,and prepare it to receive the strain, without inj ury,which may come upon it from the propelling motion, and so connect the front end ofthe engine to the boiler that the expansion of the metal, caused by the heat of the boiler, will not interfere with the fastenings by which the engine is attached to the boiler.

Figure l is a perspective of the end of the boiler,showing my gear-frame attached thereto. Fig. 2 is a detail view, showing my nvention in side elevation detached from the boiler. Fig. 3 is a side elevation of a boiler complete, showing my invention complete. Fig. 4 is an end view ofthe boiler, showing a front elevation of the gear-frame. v Fig. 5 is a detail View showing the joint between the boiler and the front end ofthe engine.

Serial No. 184,117. (No model.)

i A represents the boiler, and B the outside fire-box sheet of the boiler. This sheet B, forming the outside of the fire-box, extends past the line of steam-joints of the boiler,and may be made in one ormore sheets or pieces. As here shown, the sheet forms one continuous piece,which is wrapped around the outer fire-box and extends rearwardly and upwardly past the riveting-joint of the boiler.

Forming the sheet B of one piece and having it pass under the rire-box, as here shown, makes a kind of swing or stirrupin which the end of the boiler rests, and which relieves the rivets of the boiler of any shearing strain.

Rigidly bolted between the rear end of the plate B is the gear-frame or casting C, which consists of a large and rigid casting which is bolted or riveted between the extended portions of the outside fire-box sheet of the boiler, as shown. Either cast with and forming a part of this gear-frame C, or cast separately therefrom, as may be preferred, is the engine-frame D, as here shown. This engine-frame D is cast separately and then bolted upon the top of the casting-frame, as shown. Vhether this engine-frame D or casting shall be formed separately or in one piece is a mere matter of choice. `The cast-ing C has suitable langes .G, formed upon its outer edges to catch over the top of the sheet B, as shown, so as to support the gear-framein position, ready to receive the bolts H, which are passed through the casting and the sheet B. Through the upper portion of this gear-frame G is made a handhole, Land through the lower portion is made a suitable opening, J, so as to give free access tothe fire-box. Upon theinclin'ed portion of this gear-frame are formed suitable bearings, L, for the counter-shaft N, which shaft is secured in position by suitable boxes, O, which are bolted in position in the usual manner.

In the lower portion of the gear-frame is formed a bearing, Q, to receive the axle P, which axle is passed through this bearing endwise, and then secured in position by means of the traction and gearing wheels which are applied to it; also formed upon this gearframe are the ears or lugs It, by means of which the platform Sis secured in position,

as shown in Fig. 3. The sheet-plate B is cut IOO away at T, as shown in Figs. 1 and 3, for the purpose of allowing the journal or bearing Q of the axle to move freely and readily into po'- sition; also formed as a part of the geari'rame C is the coupling joint or hinge U, by means of which objects of any kind can be connected to the engine.

By means of the gear-frame, which is constructed and applied to the rear end 'of the boiler, as here shown, it is possible to duplicate with certainty any of the main parts of the driving or propelling mechanism, which cannot now be done with the usual construction of engines.

Asnow constructed, the shafting, axle, and gearing are mounted upon independent brackets, which are iitted directly upon the boiler by hand until they come into the exact position they should assume to suit the gearing.

vAs no two boilers are made just alike, in case of breakage a new piece has to be tted by hand in place of the broken one.

- to certain dimensions, so that one pieceis like another.

The whole mechanism complete, with the engine and gearing mounted, can be set up independently of the boiler, and then placed in posit-ion and secured. rlhe whole mechananism of the engine being placed upon this gear-frame C, it receives the strains of all of the working parts and protects the boiler or other portions from any injury. The sheet B, forming the outside ofthe dre-box, extends past the line of steam-joints of the boiler to receive this gear-frame O, which is bolted or riveted to such a large area of sheet-surface that the working strains are distributed over a great many steam-j oint rivets in the boiler,

' and thus a positive exemption of wear and tear and of leakage of the joints and rivets is secured, even under a severe strain of working the engine upon rough roads.

Owing to the expansion of the metal of the boiler A by heat, and the unequal expansion of the front end of the plate ofthe engine, the

joint at which the bed-plate and boiler are which passes through both of them, as shown. There is left a suitable amount of space between the bearings X and YV, so that the boiler can both contract and expand without injuring the bearing upon the boiler in any Way. Where the two bearings are secured together in the usual manner, the uneven expansion causes the rivets which secure the bearing to the boiler to be constantly strained and injured, to the great detriment of the boiler.

Having thus described my invention, I claim- 1. A gear-frame or casting which connects the outside edges of the fire-box sheet, and which has bearings for the axle and countershaft, and a seat upon which the bed of vthe engine is supported, substantially as shown.

2. The combination of the boiler, the sheet B, the gear-frame or casting, which is bolted between the ends of the sheet, and which is provided with bearings for the counter-shaft and axle, substantially as set forth.

3. The combination ofthe boiler, the sheet B, applied thereto, and the casting or gearframe provided with the iianges G, to support the frame in position, and which frame is provided with bearings for the shaft and the axle, substantially as described.

4. The combination of the boiler, the sheet B, applied thereto, the gear -franie or axle provided with a suitable bearing upon its top for the engine-bed, the flanges G, and the bearings for the counter-shaft and axle, and which has suitable openings through it, substantially as specied.

5. The combination of the boiler, the sheet B, the gear-frame or casting C, provided with a bearing upon its upper end Jr'or the enginebed, suitable openings through it, bearings for the counter-shaft and axle, and the lugs or projections R, substantially as shown.

6. The combination of the engine-bed'provided -with the bearings X at one end, a suitable Support for the rear end of the enginebed, the boiler, the bearing W upon the boiler, and a coupling pin or bolt for connecting the bearings X W thereto, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

EDGAR PENNEY.

IOO 

